Over three hours past launch, the words are in.
Well received by the critics, streamers and whatnot, GSC came out with a letter explaining launch stuff. Problems. Of course, while the game is pretty stable at the moment in terms of performance, occasional glitches can occur, those will be fixed in due time so hang tight.
Here are the developers on the case of issues you may or not come across:
December we will have a roadmap of planned free in-game content too.